Question: Why were the Lectures on Faith removed from the Doctrine and Covenants in 1921?

The Church said that they were removed because they had never been presented to or accepted by the membership as being anything other than theological lectures or lessons

The Church removed the Lectures from the Doctrine and Covenants in the 1921 edition with an explanation that the Lectures "were never presented to nor accepted by the Church as being otherwise than theological lectures or lessons".[1] This is in contrast to the remaining pages of the original Doctrine and Covenants which are officially recognized as divine revelation given specifically to the church.

Joseph Fielding Smith said the following concerning their removal:

a) They were not received as revelations by the prophet Joseph Smith.

b) They are instructions relative to the general subject of faith. They are explanations of this principle but not doctrine.

c) They are not complete as to their teachings regarding the Godhead. More complete instructions on the point of doctrine are given in section 130 of the 1876 and all subsequent editions of the Doctrine and Covenants.

d) It was thought by Elder James E. Talmage, chairman, and other members of the committee who were responsible for their omission that to avoid confusion and contention on this vital point of belief, it would be better not to have them bound in the same volume as the commandments or revelations which make up the Doctrine and Covenants.[2]